src/util/rmtxop.c

#ifndef lint
static const char RCSid[] = "$Id: rmtxop.c,v 2.16 2019/08/12 20:38:19 greg Exp $";
#endif
/*
 * General component matrix operations.
 */

#include <stdlib.h>
#include <errno.h>
#include "rtio.h"
#include "resolu.h"
#include "rmatrix.h"
#include "platform.h"

#define MAXCOMP         16              /* #components we support */

static const char       stdin_name[] = "<stdin>";

/* unary matrix operation(s) */
typedef struct {
        double          sca[MAXCOMP];           /* scalar coefficients */
        double          cmat[MAXCOMP*MAXCOMP];  /* component transformation */
        short           nsf;                    /* number of scalars */
        short           clen;                   /* number of coefficients */
        short           transpose;              /* do transpose? */
} RUNARYOP;

/* matrix input source and requested operation(s) */
typedef struct {
        const char      *inspec;                /* input specification */
        RUNARYOP        preop;                  /* unary operation(s) */
        RMATRIX         *mtx;                   /* original matrix if loaded */
        int             binop;                  /* binary op with next (or 0) */
} ROPMAT;

int     verbose = 0;                    /* verbose reporting? */

/* Load matrix */
static int
loadmatrix(ROPMAT *rop)
{
        if (rop->mtx != NULL)
                return(0);

        rop->mtx = rmx_load(rop->inspec == stdin_name ?
                                (const char *)NULL : rop->inspec);
        if (rop->mtx == NULL) {
                fputs(rop->inspec, stderr);
                fputs(": cannot load matrix\n", stderr);
                return(-1);
        }
        return(1);
}

/* Get matrix and perform unary operations */
static RMATRIX *
loadop(ROPMAT *rop)
{
        RMATRIX *mres;
        int     i;

        if (loadmatrix(rop) < 0)                /* make sure we're loaded */
                return(NULL);

        if (rop->preop.nsf > 0) {               /* apply scalar(s) */
                if (rop->preop.clen > 0) {
                        fputs("Options -s and -c are exclusive\n", stderr);
                        goto failure;
                }
                if (rop->preop.nsf == 1) {
                        for (i = rop->mtx->ncomp; --i; )
                                rop->preop.sca[i] = rop->preop.sca[0];
                } else if (rop->preop.nsf != rop->mtx->ncomp) {
                        fprintf(stderr, "%s: -s must have one or %d factors\n",
                                        rop->inspec, rop->mtx->ncomp);
                        goto failure;
                }
                if (!rmx_scale(rop->mtx, rop->preop.sca)) {
                        fputs(rop->inspec, stderr);
                        fputs(": scalar operation failed\n", stderr);
                        goto failure;
                }
                if (verbose) {
                        fputs(rop->inspec, stderr);
                        fputs(": applied scalar (", stderr);
                        for (i = 0; i < rop->preop.nsf; i++)
                                fprintf(stderr, " %f", rop->preop.sca[i]);
                        fputs(" )\n", stderr);
                }
        }
        if (rop->preop.clen > 0) {      /* apply transform */
                if (rop->preop.clen % rop->mtx->ncomp) {
                        fprintf(stderr, "%s: -c must have N x %d coefficients\n",
                                        rop->inspec, rop->mtx->ncomp);
                        goto failure;
                }
                mres = rmx_transform(rop->mtx, rop->preop.clen/rop->mtx->ncomp,
                                        rop->preop.cmat);
                if (mres == NULL) {
                        fprintf(stderr, "%s: matrix transform failed\n",
                                                rop->inspec);
                        goto failure;
                }
                if (verbose)
                        fprintf(stderr, "%s: applied %d x %d transform\n",
                                        rop->inspec, mres->ncomp,
                                        rop->mtx->ncomp);
                rmx_free(rop->mtx);
                rop->mtx = mres;
        }
        if (rop->preop.transpose) {     /* transpose matrix? */
                mres = rmx_transpose(rop->mtx);
                if (mres == NULL) {
                        fputs(rop->inspec, stderr);
                        fputs(": transpose failed\n", stderr);
                        goto failure;
                }
                if (verbose) {
                        fputs(rop->inspec, stderr);
                        fputs(": transposed rows and columns\n", stderr);
                }
                rmx_free(rop->mtx);
                rop->mtx = mres;
        }
        mres = rop->mtx;
        rop->mtx = NULL;
        return(mres);
failure:
        rmx_free(rop->mtx);
        return(rop->mtx = NULL);
}

/* Execute binary operation, free matrix arguments and return new result */
static RMATRIX *
binaryop(const char *inspec, RMATRIX *mleft, int op, RMATRIX *mright)
{
        RMATRIX *mres = NULL;
        int     i;

        if ((mleft == NULL) | (mright == NULL))
                return(NULL);
        switch (op) {
        case '.':                       /* concatenate */
                if (mleft->ncomp != mright->ncomp) {
                        fputs(inspec, stderr);
                        fputs(": # components do not match\n", stderr);
                } else if (mleft->ncols != mright->nrows) {
                        fputs(inspec, stderr);
                        fputs(": mismatched dimensions\n",
                                        stderr);
                } else
                        mres = rmx_multiply(mleft, mright);
                rmx_free(mleft);
                rmx_free(mright);
                if (mres == NULL) {
                        fputs(inspec, stderr);
                        fputs(": concatenation failed\n", stderr);
                        return(NULL);
                }
                if (verbose) {
                        fputs(inspec, stderr);
                        fputs(": concatenated matrix\n", stderr);
                }
                break;
        case '+':
                if (!rmx_sum(mleft, mright, NULL)) {
                        fputs(inspec, stderr);
                        fputs(": matrix sum failed\n", stderr);
                        rmx_free(mleft);
                        rmx_free(mright);
                        return(NULL);
                }
                if (verbose) {
                        fputs(inspec, stderr);
                        fputs(": added in matrix\n", stderr);
                }
                rmx_free(mright);
                mres = mleft;
                break;
        case '*':
        case '/': {
                const char *    tnam = (op == '/') ?
                                        "division" : "multiplication";
                errno = 0;
                if (!rmx_elemult(mleft, mright, (op == '/'))) {
                        fprintf(stderr, "%s: element-wise %s failed\n",
                                        inspec, tnam);
                        rmx_free(mleft);
                        rmx_free(mright);
                        return(NULL);
                }
                if (errno)
                        fprintf(stderr,
                                "%s: warning - error during element-wise %s\n",
                                        inspec, tnam);
                else if (verbose)
                        fprintf(stderr, "%s: element-wise %s\n", inspec, tnam);
                rmx_free(mright);
                mres = mleft;
                } break;
        default:
                fprintf(stderr, "%s: unknown operation '%c'\n", inspec, op);
                rmx_free(mleft);
                rmx_free(mright);
                return(NULL);
        }
        return(mres);
}

/* Perform matrix operations from left to right */
static RMATRIX *
op_left2right(ROPMAT *mop)
{
        RMATRIX *mleft = loadop(mop);

        while (mop->binop) {
                if (mleft == NULL)
                        break;
                mleft = binaryop(mop[1].inspec,
                                mleft, mop->binop, loadop(mop+1));
                mop++;
        }
        return(mleft);
}

/* Perform matrix operations from right to left */
static RMATRIX *
op_right2left(ROPMAT *mop)
{
        RMATRIX *mright;
        int     rpos = 0;
                                        /* find end of list */
        while (mop[rpos].binop)
                if (mop[rpos++].binop != '.') {
                        fputs(
                "Right-to-left evaluation only for matrix multiplication!\n",
                                        stderr);
                        return(NULL);
                }
        mright = loadop(mop+rpos);
        while (rpos-- > 0) {
                if (mright == NULL)
                        break;
                mright = binaryop(mop[rpos].inspec,
                                loadop(mop+rpos), mop[rpos].binop, mright);
        }
        return(mright);
}

#define t_nrows(mop)    ((mop)->preop.transpose ? (mop)->mtx->ncols \
                                                : (mop)->mtx->nrows)
#define t_ncols(mop)    ((mop)->preop.transpose ? (mop)->mtx->nrows \
                                                : (mop)->mtx->ncols)

/* Should we prefer concatenating from rightmost matrix towards left? */
static int
prefer_right2left(ROPMAT *mop)
{
        int     mri = 0;

        while (mop[mri].binop)          /* find rightmost matrix */
                if (mop[mri++].binop != '.')
                        return(0);      /* pre-empt reversal for other ops */

        if (mri <= 1)
                return(0);              /* won't matter */

        if (loadmatrix(mop+mri) < 0)    /* load rightmost cat */
                return(1);              /* fail will bail in a moment */

        if (t_ncols(mop+mri) == 1)
                return(1);              /* definitely better R->L */

        if (t_ncols(mop+mri) >= t_nrows(mop+mri))
                return(0);              /* ...probably worse */

        if (loadmatrix(mop) < 0)        /* load leftmost */
                return(0);              /* fail will bail in a moment */

        return(t_ncols(mop+mri) < t_nrows(mop));
}

static int
get_factors(double da[], int n, char *av[])
{
        int     ac;

        for (ac = 0; ac < n && isflt(av[ac]); ac++)
                da[ac] = atof(av[ac]);
        return(ac);
}

static ROPMAT *
grow_moparray(ROPMAT *mop, int n2alloc)
{
        int     nmats = 0;

        while (mop[nmats++].binop)
                ;
        mop = (ROPMAT *)realloc(mop, n2alloc*sizeof(ROPMAT));
        if (mop == NULL) {
                fputs("Out of memory in grow_moparray()\n", stderr);
                exit(1);
        }
        if (n2alloc > nmats)
                memset(mop+nmats, 0, (n2alloc-nmats)*sizeof(ROPMAT));
        return(mop);
}

/* Load one or more matrices and operate on them, sending results to stdout */
int
main(int argc, char *argv[])
{
        int     outfmt = DTfromHeader;
        int     nall = 2;
        ROPMAT  *mop = (ROPMAT *)calloc(nall, sizeof(ROPMAT));
        int     nmats = 0;
        RMATRIX *mres = NULL;
        int     stdin_used = 0;
        int     i;
                                        /* get options and arguments */
        for (i = 1; i < argc; i++) {
                if (argv[i][0] && !argv[i][1] &&
                                strchr(".+*/", argv[i][0]) != NULL) {
                        if (!nmats || mop[nmats-1].binop) {
                                fprintf(stderr,
                        "%s: missing matrix argument before '%c' operation\n",
                                                argv[0], argv[i][0]);
                                return(1);
                        }
                        mop[nmats-1].binop = argv[i][0];
                } else if (argv[i][0] != '-' || !argv[i][1]) {
                        if (argv[i][0] == '-') {
                                if (stdin_used++) {
                                        fprintf(stderr,
                        "%s: standard input used for more than one matrix\n",
                                                argv[0]);
                                        return(1);
                                }
                                mop[nmats].inspec = stdin_name;
                        } else
                                mop[nmats].inspec = argv[i];
                        if (nmats > 0 && !mop[nmats-1].binop)
                                mop[nmats-1].binop = '.';
                        nmats++;
                } else {
                        int     n = argc-1 - i;
                        switch (argv[i][1]) {   /* get option */
                        case 'v':
                                verbose++;
                                break;
                        case 'f':
                                switch (argv[i][2]) {
                                case 'd':
                                        outfmt = DTdouble;
                                        break;
                                case 'f':
                                        outfmt = DTfloat;
                                        break;
                                case 'a':
                                        outfmt = DTascii;
                                        break;
                                case 'c':
                                        outfmt = DTrgbe;
                                        break;
                                default:
                                        goto userr;
                                }
                                break;
                        case 't':
                                mop[nmats].preop.transpose = 1;
                                break;
                        case 's':
                                if (n > MAXCOMP) n = MAXCOMP;
                                i += mop[nmats].preop.nsf =
                                        get_factors(mop[nmats].preop.sca,
                                                        n, argv+i+1);
                                break;
                        case 'c':
                                if (n > MAXCOMP*MAXCOMP) n = MAXCOMP*MAXCOMP;
                                i += mop[nmats].preop.clen =
                                        get_factors(mop[nmats].preop.cmat,
                                                        n, argv+i+1);
                                break;
                        default:
                                fprintf(stderr, "%s: unknown operation '%s'\n",
                                                argv[0], argv[i]);
                                goto userr;
                        }
                }
                if (nmats >= nall)
                        mop = grow_moparray(mop, nall += 2);
        }
        if (mop[0].inspec == NULL)      /* nothing to do? */
                goto userr;
        if (mop[nmats-1].binop) {
                fprintf(stderr,
                        "%s: missing matrix argument after '%c' operation\n",
                                argv[0], mop[nmats-1].binop);
                return(1);
        }
                                        /* favor quicker concatenation */
        mop[nmats].mtx = prefer_right2left(mop) ? op_right2left(mop)
                                                : op_left2right(mop);
        if (mop[nmats].mtx == NULL)
                return(1);
                                        /* apply trailing unary operations */
        mop[nmats].inspec = "trailing_ops";
        mres = loadop(mop+nmats);
        if (mres == NULL)
                return(1);
                                        /* write result to stdout */
        if (outfmt == DTfromHeader)
                outfmt = mres->dtype;
        if (outfmt != DTascii)
                SET_FILE_BINARY(stdout);
        newheader("RADIANCE", stdout);
        printargs(argc, argv, stdout);
        if (!rmx_write(mres, outfmt, stdout)) {
                fprintf(stderr, "%s: error writing result matrix\n", argv[0]);
                return(1);
        }
        /* rmx_free(mres); free(mop); */
        return(0);
userr:
        fprintf(stderr,
        "Usage: %s [-v][-f[adfc][-t][-s sf .. | -c ce ..] m1 [.+*/] .. > mres\n",
                        argv[0]);
        return(1);
}
Revision:	2.17
Committed:	Sat Dec 28 18:05:14 2019 UTC (4 years, 3 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R3
Changes since 2.16:	+1 -2 lines
Log Message:	Removed redundant include files
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.17	static const char RCSid[] = "$Id: rmtxop.c,v 2.16 2019/08/12 20:38:19 greg Exp $";
3	greg	2.1	#endif
4			/*
5			* General component matrix operations.
6			*/
7
8			#include <stdlib.h>
9	greg	2.11	#include <errno.h>
10	greg	2.1	#include "rtio.h"
11			#include "resolu.h"
12			#include "rmatrix.h"
13	greg	2.10	#include "platform.h"
14	greg	2.1
15	greg	2.13	#define MAXCOMP 16 /* #components we support */
16	greg	2.1
17	greg	2.13	static const char stdin_name[] = "<stdin>";
18
19			/* unary matrix operation(s) */
20	greg	2.1	typedef struct {
21			double sca[MAXCOMP]; /* scalar coefficients */
22			double cmat[MAXCOMPMAXCOMP]; / component transformation */
23	greg	2.13	short nsf; /* number of scalars */
24			short clen; /* number of coefficients */
25			short transpose; /* do transpose? */
26			} RUNARYOP;
27
28			/* matrix input source and requested operation(s) */
29			typedef struct {
30			const char inspec; / input specification */
31			RUNARYOP preop; /* unary operation(s) */
32			RMATRIX mtx; / original matrix if loaded */
33			int binop; /* binary op with next (or 0) */
34			} ROPMAT;
35	greg	2.1
36			int verbose = 0; /* verbose reporting? */
37
38	greg	2.13	/* Load matrix */
39			static int
40			loadmatrix(ROPMAT *rop)
41	greg	2.1	{
42	greg	2.13	if (rop->mtx != NULL)
43			return(0);
44
45			rop->mtx = rmx_load(rop->inspec == stdin_name ?
46			(const char *)NULL : rop->inspec);
47			if (rop->mtx == NULL) {
48			fputs(rop->inspec, stderr);
49			fputs(": cannot load matrix\n", stderr);
50			return(-1);
51			}
52			return(1);
53	greg	2.1	}
54
55	greg	2.13	/* Get matrix and perform unary operations */
56	greg	2.1	static RMATRIX *
57	greg	2.13	loadop(ROPMAT *rop)
58	greg	2.1	{
59	greg	2.13	RMATRIX *mres;
60	greg	2.1	int i;
61
62	greg	2.13	if (loadmatrix(rop) < 0) /* make sure we're loaded */
63	greg	2.1	return(NULL);
64	greg	2.13
65			if (rop->preop.nsf > 0) { /* apply scalar(s) */
66			if (rop->preop.clen > 0) {
67	greg	2.1	fputs("Options -s and -c are exclusive\n", stderr);
68	greg	2.13	goto failure;
69	greg	2.1	}
70	greg	2.13	if (rop->preop.nsf == 1) {
71			for (i = rop->mtx->ncomp; --i; )
72			rop->preop.sca[i] = rop->preop.sca[0];
73			} else if (rop->preop.nsf != rop->mtx->ncomp) {
74	greg	2.1	fprintf(stderr, "%s: -s must have one or %d factors\n",
75	greg	2.13	rop->inspec, rop->mtx->ncomp);
76			goto failure;
77	greg	2.1	}
78	greg	2.13	if (!rmx_scale(rop->mtx, rop->preop.sca)) {
79			fputs(rop->inspec, stderr);
80	greg	2.1	fputs(": scalar operation failed\n", stderr);
81	greg	2.13	goto failure;
82	greg	2.1	}
83			if (verbose) {
84	greg	2.13	fputs(rop->inspec, stderr);
85	greg	2.1	fputs(": applied scalar (", stderr);
86	greg	2.13	for (i = 0; i < rop->preop.nsf; i++)
87			fprintf(stderr, " %f", rop->preop.sca[i]);
88	greg	2.1	fputs(" )\n", stderr);
89			}
90			}
91	greg	2.13	if (rop->preop.clen > 0) { /* apply transform */
92			if (rop->preop.clen % rop->mtx->ncomp) {
93	greg	2.1	fprintf(stderr, "%s: -c must have N x %d coefficients\n",
94	greg	2.13	rop->inspec, rop->mtx->ncomp);
95			goto failure;
96	greg	2.1	}
97	greg	2.13	mres = rmx_transform(rop->mtx, rop->preop.clen/rop->mtx->ncomp,
98			rop->preop.cmat);
99			if (mres == NULL) {
100			fprintf(stderr, "%s: matrix transform failed\n",
101			rop->inspec);
102			goto failure;
103	greg	2.1	}
104			if (verbose)
105			fprintf(stderr, "%s: applied %d x %d transform\n",
106	greg	2.13	rop->inspec, mres->ncomp,
107			rop->mtx->ncomp);
108			rmx_free(rop->mtx);
109			rop->mtx = mres;
110	greg	2.1	}
111	greg	2.13	if (rop->preop.transpose) { /* transpose matrix? */
112			mres = rmx_transpose(rop->mtx);
113			if (mres == NULL) {
114			fputs(rop->inspec, stderr);
115	greg	2.12	fputs(": transpose failed\n", stderr);
116	greg	2.13	goto failure;
117	greg	2.12	}
118			if (verbose) {
119	greg	2.13	fputs(rop->inspec, stderr);
120	greg	2.12	fputs(": transposed rows and columns\n", stderr);
121			}
122	greg	2.13	rmx_free(rop->mtx);
123			rop->mtx = mres;
124			}
125			mres = rop->mtx;
126			rop->mtx = NULL;
127			return(mres);
128			failure:
129			rmx_free(rop->mtx);
130			return(rop->mtx = NULL);
131			}
132
133			/* Execute binary operation, free matrix arguments and return new result */
134			static RMATRIX *
135			binaryop(const char inspec, RMATRIX mleft, int op, RMATRIX *mright)
136			{
137			RMATRIX *mres = NULL;
138			int i;
139
140			if ((mleft == NULL) \| (mright == NULL))
141			return(NULL);
142			switch (op) {
143			case '.': /* concatenate */
144	greg	2.16	if (mleft->ncomp != mright->ncomp) {
145			fputs(inspec, stderr);
146			fputs(": # components do not match\n", stderr);
147			} else if (mleft->ncols != mright->nrows) {
148			fputs(inspec, stderr);
149			fputs(": mismatched dimensions\n",
150			stderr);
151			} else
152			mres = rmx_multiply(mleft, mright);
153	greg	2.13	rmx_free(mleft);
154	greg	2.12	rmx_free(mright);
155	greg	2.1	if (mres == NULL) {
156	greg	2.13	fputs(inspec, stderr);
157	greg	2.16	fputs(": concatenation failed\n", stderr);
158	greg	2.1	return(NULL);
159			}
160			if (verbose) {
161	greg	2.13	fputs(inspec, stderr);
162	greg	2.1	fputs(": concatenated matrix\n", stderr);
163			}
164	greg	2.13	break;
165			case '+':
166			if (!rmx_sum(mleft, mright, NULL)) {
167			fputs(inspec, stderr);
168	greg	2.1	fputs(": matrix sum failed\n", stderr);
169	greg	2.13	rmx_free(mleft);
170	greg	2.1	rmx_free(mright);
171			return(NULL);
172			}
173			if (verbose) {
174	greg	2.13	fputs(inspec, stderr);
175	greg	2.1	fputs(": added in matrix\n", stderr);
176			}
177			rmx_free(mright);
178	greg	2.13	mres = mleft;
179			break;
180			case '*':
181			case '/': {
182			const char * tnam = (op == '/') ?
183	greg	2.11	"division" : "multiplication";
184			errno = 0;
185	greg	2.13	if (!rmx_elemult(mleft, mright, (op == '/'))) {
186	greg	2.11	fprintf(stderr, "%s: element-wise %s failed\n",
187	greg	2.13	inspec, tnam);
188			rmx_free(mleft);
189	greg	2.11	rmx_free(mright);
190			return(NULL);
191			}
192			if (errno)
193			fprintf(stderr,
194			"%s: warning - error during element-wise %s\n",
195	greg	2.13	inspec, tnam);
196	greg	2.11	else if (verbose)
197	greg	2.13	fprintf(stderr, "%s: element-wise %s\n", inspec, tnam);
198	greg	2.11	rmx_free(mright);
199	greg	2.13	mres = mleft;
200			} break;
201			default:
202			fprintf(stderr, "%s: unknown operation '%c'\n", inspec, op);
203			rmx_free(mleft);
204	greg	2.1	rmx_free(mright);
205			return(NULL);
206			}
207	greg	2.13	return(mres);
208			}
209
210			/* Perform matrix operations from left to right */
211			static RMATRIX *
212			op_left2right(ROPMAT *mop)
213			{
214			RMATRIX *mleft = loadop(mop);
215
216			while (mop->binop) {
217			if (mleft == NULL)
218			break;
219			mleft = binaryop(mop[1].inspec,
220			mleft, mop->binop, loadop(mop+1));
221			mop++;
222			}
223	greg	2.1	return(mleft);
224			}
225
226	greg	2.13	/* Perform matrix operations from right to left */
227			static RMATRIX *
228			op_right2left(ROPMAT *mop)
229			{
230			RMATRIX *mright;
231			int rpos = 0;
232			/* find end of list */
233			while (mop[rpos].binop)
234	greg	2.14	if (mop[rpos++].binop != '.') {
235			fputs(
236			"Right-to-left evaluation only for matrix multiplication!\n",
237			stderr);
238			return(NULL);
239			}
240	greg	2.13	mright = loadop(mop+rpos);
241			while (rpos-- > 0) {
242			if (mright == NULL)
243			break;
244			mright = binaryop(mop[rpos].inspec,
245			loadop(mop+rpos), mop[rpos].binop, mright);
246			}
247			return(mright);
248			}
249
250			#define t_nrows(mop) ((mop)->preop.transpose ? (mop)->mtx->ncols \
251			: (mop)->mtx->nrows)
252			#define t_ncols(mop) ((mop)->preop.transpose ? (mop)->mtx->nrows \
253			: (mop)->mtx->ncols)
254
255			/* Should we prefer concatenating from rightmost matrix towards left? */
256			static int
257			prefer_right2left(ROPMAT *mop)
258			{
259			int mri = 0;
260
261			while (mop[mri].binop) /* find rightmost matrix */
262			if (mop[mri++].binop != '.')
263			return(0); /* pre-empt reversal for other ops */
264
265			if (mri <= 1)
266			return(0); /* won't matter */
267
268			if (loadmatrix(mop+mri) < 0) /* load rightmost cat */
269			return(1); /* fail will bail in a moment */
270
271			if (t_ncols(mop+mri) == 1)
272			return(1); /* definitely better R->L */
273
274			if (t_ncols(mop+mri) >= t_nrows(mop+mri))
275			return(0); /* ...probably worse */
276
277			if (loadmatrix(mop) < 0) /* load leftmost */
278			return(0); /* fail will bail in a moment */
279
280			return(t_ncols(mop+mri) < t_nrows(mop));
281			}
282
283	greg	2.1	static int
284			get_factors(double da[], int n, char *av[])
285			{
286			int ac;
287
288			for (ac = 0; ac < n && isflt(av[ac]); ac++)
289			da[ac] = atof(av[ac]);
290			return(ac);
291			}
292
293	greg	2.13	static ROPMAT *
294			grow_moparray(ROPMAT *mop, int n2alloc)
295			{
296			int nmats = 0;
297
298			while (mop[nmats++].binop)
299			;
300			mop = (ROPMAT )realloc(mop, n2allocsizeof(ROPMAT));
301			if (mop == NULL) {
302			fputs("Out of memory in grow_moparray()\n", stderr);
303			exit(1);
304			}
305			if (n2alloc > nmats)
306			memset(mop+nmats, 0, (n2alloc-nmats)*sizeof(ROPMAT));
307			return(mop);
308			}
309
310	greg	2.1	/* Load one or more matrices and operate on them, sending results to stdout */
311			int
312			main(int argc, char *argv[])
313			{
314	greg	2.7	int outfmt = DTfromHeader;
315	greg	2.13	int nall = 2;
316			ROPMAT mop = (ROPMAT )calloc(nall, sizeof(ROPMAT));
317			int nmats = 0;
318	greg	2.1	RMATRIX *mres = NULL;
319	greg	2.13	int stdin_used = 0;
320	greg	2.1	int i;
321			/* get options and arguments */
322	greg	2.13	for (i = 1; i < argc; i++) {
323	greg	2.11	if (argv[i][0] && !argv[i][1] &&
324	greg	2.13	strchr(".+*/", argv[i][0]) != NULL) {
325	greg	2.15	if (!nmats \|\| mop[nmats-1].binop) {
326	greg	2.14	fprintf(stderr,
327	greg	2.15	"%s: missing matrix argument before '%c' operation\n",
328	greg	2.14	argv[0], argv[i][0]);
329	greg	2.13	return(1);
330			}
331	greg	2.15	mop[nmats-1].binop = argv[i][0];
332	greg	2.1	} else if (argv[i][0] != '-' \|\| !argv[i][1]) {
333	greg	2.13	if (argv[i][0] == '-') {
334			if (stdin_used++) {
335			fprintf(stderr,
336			"%s: standard input used for more than one matrix\n",
337			argv[0]);
338			return(1);
339			}
340			mop[nmats].inspec = stdin_name;
341			} else
342			mop[nmats].inspec = argv[i];
343			if (nmats > 0 && !mop[nmats-1].binop)
344			mop[nmats-1].binop = '.';
345			nmats++;
346	greg	2.1	} else {
347			int n = argc-1 - i;
348			switch (argv[i][1]) { /* get option */
349			case 'v':
350	greg	2.14	verbose++;
351	greg	2.1	break;
352			case 'f':
353			switch (argv[i][2]) {
354			case 'd':
355			outfmt = DTdouble;
356			break;
357			case 'f':
358			outfmt = DTfloat;
359			break;
360			case 'a':
361			outfmt = DTascii;
362			break;
363			case 'c':
364			outfmt = DTrgbe;
365			break;
366			default:
367			goto userr;
368			}
369			break;
370			case 't':
371	greg	2.13	mop[nmats].preop.transpose = 1;
372	greg	2.1	break;
373			case 's':
374			if (n > MAXCOMP) n = MAXCOMP;
375	greg	2.13	i += mop[nmats].preop.nsf =
376			get_factors(mop[nmats].preop.sca,
377			n, argv+i+1);
378	greg	2.1	break;
379			case 'c':
380			if (n > MAXCOMPMAXCOMP) n = MAXCOMPMAXCOMP;
381	greg	2.13	i += mop[nmats].preop.clen =
382			get_factors(mop[nmats].preop.cmat,
383			n, argv+i+1);
384	greg	2.1	break;
385			default:
386			fprintf(stderr, "%s: unknown operation '%s'\n",
387			argv[0], argv[i]);
388			goto userr;
389			}
390			}
391	greg	2.14	if (nmats >= nall)
392			mop = grow_moparray(mop, nall += 2);
393	greg	2.13	}
394			if (mop[0].inspec == NULL) /* nothing to do? */
395	greg	2.1	goto userr;
396	greg	2.15	if (mop[nmats-1].binop) {
397			fprintf(stderr,
398			"%s: missing matrix argument after '%c' operation\n",
399			argv[0], mop[nmats-1].binop);
400			return(1);
401			}
402	greg	2.13	/* favor quicker concatenation */
403	greg	2.14	mop[nmats].mtx = prefer_right2left(mop) ? op_right2left(mop)
404			: op_left2right(mop);
405			if (mop[nmats].mtx == NULL)
406			return(1);
407			/* apply trailing unary operations */
408			mop[nmats].inspec = "trailing_ops";
409			mres = loadop(mop+nmats);
410			if (mres == NULL)
411	greg	2.13	return(1);
412	greg	2.1	/* write result to stdout */
413	greg	2.6	if (outfmt == DTfromHeader)
414			outfmt = mres->dtype;
415	greg	2.4	if (outfmt != DTascii)
416	greg	2.10	SET_FILE_BINARY(stdout);
417	greg	2.1	newheader("RADIANCE", stdout);
418			printargs(argc, argv, stdout);
419	greg	2.5	if (!rmx_write(mres, outfmt, stdout)) {
420	greg	2.1	fprintf(stderr, "%s: error writing result matrix\n", argv[0]);
421			return(1);
422			}
423	greg	2.13	/* rmx_free(mres); free(mop); */
424	greg	2.1	return(0);
425			userr:
426			fprintf(stderr,
427	greg	2.13	"Usage: %s [-v][-f[adfc][-t][-s sf .. \| -c ce ..] m1 [.+*/] .. > mres\n",
428	greg	2.1	argv[0]);
429			return(1);
430			}